smut (n.)
- algae
- alluvion
- alluvium
- ash
- ashes
- autophyte
- bawdiness
- bawdry
- bean
- black
- blackening
- blackwash
- blast
- blight
- bloodstain
- blot
- blotch
- blur
- bracken
- bran
- brand
- calx
- cancer
- canker
- carbon
- carrion
- charcoal
- cinder
- climber
- clinker
- coal
- coke
- conferva
- cork
- corruption
- creeper
- crow
- crumb
- dab
- dandruff
- darkening
- daub
- decay
- defile
- denigration
- deposition
- diatom
- dinge
- dirt
- dirtiness
- discolor
- dregs
- dross
- dust
- ebony
- efflorescence
- ember
- excrement
- eyesore
- fallout
- farina
- feces
- fern
- filth
- filthiness
- fleck
- flick
- flour
- flyspeck
- foulness
- froth
- fucus
- fume
- fungus
- gangrene
- grapevine
- grime
- grits
- groats
- grounds
- gulfweed
- herb
- ink
- ivy
- jet
- kelp
- lava
- lees
- legume
- lentil
- lewdness
- liana
- lichen
- lint
- liverwort
- loess
- macula
- maculation
- macule
- mark
- meal
- mess
- mildew
- mold
- moraine
- moss
- moth
- muck
- mucus
- mud
- murk
- mushroom
- must
- nastiness
- night
- obscenity
- offensiveness
- ordure
- parasite
- patch
- pea
- pest
- phytoplankton
- pitch
- pornography
- powder
- precipitate
- precipitation
- puffball
- pulse
- pus
- raven
- reek
- ribaldry
- rockweed
- rot
- rust
- salaciousness
- salacity
- saprophyte
- sargasso
- sargassum
- sawdust
- scoria
- scum
- scurf
- scurrility
- seaweed
- sediment
- settlings
- sexploitation
- shade
- shading
- shadow
- silt
- slag
- slime
- sloe
- smear
- smirch
- smoke
- smudge
- smuttiness
- snot
- soil
- soilure
- soot
- spatter
- speck
- speckle
- splash
- splatter
- splotch
- spot
- stain
- stigma
- sublimate
- succulent
- sully
- taint
- tar
- tarnish
- toadstool
- vetch
- vileness
- vine
- worm
- wort
- wrack
smut (v.)
- ash
- bean
- bedaub
- besmear
- besmirch
- black
- blacken
- blackwash
- blast
- blight
- blot
- blotch
- blur
- brand
- canker
- charcoal
- clinker
- coal
- coke
- cork
- crow
- crumb
- crumble
- dab
- darken
- daub
- decay
- defile
- denigrate
- dinge
- dirt
- dirty
- discolor
- dust
- ebonize
- ember
- fleck
- flick
- flour
- froth
- fume
- gangrene
- grime
- ink
- ivy
- jet
- kittens
- lint
- mark
- melanize
- mess
- mildew
- mold
- muck
- mud
- murk
- mushroom
- night
- patch
- pitch
- powder
- precipitate
- pulse
- pus
- raven
- reek
- rot
- rust
- scum
- sediment
- shade
- shadow
- silt
- sinter
- slag
- slime
- smear
- smirch
- smoke
- smudge
- smutch
- soil
- soot
- spatter
- speck
- speckle
- splash
- splatter
- splotch
- spot
- stain
- sublimate
- sully
- taint
- tar
- tarnish
- vetch
- vine
- worm
- wrack
